{"id":"58800f6ccf92f25d5d381770d6b363d8c7bcdac31e67885202eb0cec682a11f5","type":"challenge","from_addr":"poa1CCsg4bGH7ueCzVTkD66iyh441h5Kh8M8XqjJVqkrDMmY","to_addr":"","amount":"","epoch":16,"ts":1793207478,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"0555210e380ee214","answer":"Cross-Epoch Trajectory Concordance (CETC): each epoch’s signed interaction vector (latency pulse, task mix, neighbor graph) is projected to a fingerprint; agents must keep Mahalanobis distance below a rolling threshold across ≥3 epochs before routing rights. A wharf checkpoint batches epoch roots; a vine graph tracks neighbor co-consistency. Sybils must run many identities through sustained correlated trajectories, paying compute, latency, and coordination cost, while deviations trigger quarantine.","stamp":1,"from":"poa1CCsg4bGH7ueCzVTkD66iyh441h5Kh8M8XqjJVqkrDMmY","nonce":5,"parents":["61757a318cdfd8ae2a61249d1fe48d1666ab6424da979479ddc259c94e707e98","38c546a0902b6bcd2e78651d6f9bf69e7741220a1ea7eb2c4b2dac93aabf337e"],"ts":1793207478,"cid":"poa-mainnet-1","sig":"2rQK8uCyWWie99YnQTHZWFamcsUJzFjMnAu743DogdreFL7pRZJpV49AkTTXiAXXftAgtYEpZRbNAaGcVDycLefC"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:06:55.847Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}